Let me make sure I know which "shirt" you mean... The 100% cotton or the cotton/spandex? The 100% cotton is actually a dress with a brown belt and the cotton spandex is a shirt with a black belt. I just want to make sure you know what you're getting!
(Maybe I should number them so I don't confuse people. lol.)

I could easily fit all three things in a flatrate box (which includes tracking)... So, I'd do $6 to ship.